Accounts Receivable, Net (Detail) - USD ($) $ in Thousands	Sep. 27, 2024	Dec. 29, 2023
Accounts Notes And Loans Receivable [Line Items]
Allowance for contract losses and doubtful accounts	$ (6,481)	$ (5,281)
Total accounts receivable, net	168,618	167,360
Billed accounts receivable
Accounts Notes And Loans Receivable [Line Items]
Accounts Receivable	117,746	128,052
Unbilled accounts receivable
Accounts Notes And Loans Receivable [Line Items]
Accounts Receivable	$ 57,353	$ 44,589